1. Department of Basic Research, Guangzhou Laboratory , Guangzhou 510005 , China
2. MOE Key Laboratory of Protein Science, School of Medicine, Tsinghua University , Beijing 100084 , China
3. National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences , Beijing 100101 , China
4. University of Chinese Academy of Sciences , Beijing 100049 , China
5. National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences , Wuhan 430071 , China
6. State Key Laboratory of Medicinal Chemical Biology and College of Life Science and Pharmacy, Nankai University , Tianjin 300350 , China